The term metaphysics comes from the Greek and means beyond physics. It constitutes a branch of philosophy that tries to go beyond the visible reality, in order to understand the mysteries that transcend the human cognitive abilities, incorporating the enigmas related to the origin, purpose and destiny of humanity.
However, the Christian metaphysics of Conny Mendez is not consistent with the transcendental purpose of metaphysics (going further to understand the great existential mysteries) and is more a method of self-help than a valid philosophical discipline.
In addition, the Christian metaphysics is based on esoteric, Gnostic and Hermetic principles of the New Age (incompatible with Christianity), and even rejects some Christian foundations (God is not the judge of humanity, Jesus isn´t God nor the Savior, etc.) and the Judeo-Christian notion of sin.
Therefore, this Christian metaphysics, also called dynamic Christianity, is questionable and easy to reject because it isn´t metaphysic and neither is Christian.